Probably the tonsils.
Usually that can be a pimple on the inside of the nose.
causes of swollen xiphoid process
When lying down, gravity causes saliva to pool at the back of the mouth, leading to the sensation of decreased saliva production. This can make swallowing difficult due to the accumulation of saliva in the throat. Additionally, certain medical conditions or medications can also affect saliva production, leading to dry mouth or difficulty swallowing. It's advisable to seek medical advice if this issue persists.
Strep throat
A suddenly swollen tongue can be caused by an allergic reaction. A chronically swollen tongue -- in other words, the tongue becomes swollen over time and remains swollen -- can be an indication of hypothyroidism.
You are swallowing air to fast.
usally allergic reactions
pregnancy
visine for dry eyes
smoking.
an infected tooth is possible
if you have an allery or if something bites you or irritate you , depends.